TORONTO — For the first time in almost a month, the Blues exited a road building with a loss. A 4-1 loss to the Maple Leafs on Tuesday night in Toronto ended a five-game road win streak for St. Louis and handed the Blues just their second loss in their past nine games. Bobby McMann had a hat trick for the Maple Leafs as William Nylander scored another. For the second straight game, Alexey Toropchenko scored for the Blues. The Blues struggled to generate much offense in Toronto, pumping only 11 shots on goal in the opening 40 minutes and mustering just one in the first 12-plus minutes of the th…